Cylinder lock



Aug. 29

CYLINDE O CK Filed Ana. 2, 1926 Patented Aug. 2, 1927. p I 1 1,637,953 UNITED STATES} PATENT. OFFICE.

MA XWELL MAXWELL, OF STAMFORD, CONNECTICUT, ASSlIGNOR TO THE YALE.& TOWNE MANUFACTURING COMPANY,-OF STAMFORD, CONNECTICUT.

I CYLINDER LOCK. Application filed August 2; 1926. Serial No. 126,556.

This invention relates to improvements in armor cap and this cap is utilized as part' cylinder locks,-one object of the invention of means for securing the plug against being to provide simple and eflicient meanslongitudinal displacementrelatively to the to secure a rotatable member against longicylinder. The, securing wire is prevented 6 tudinal displacement from the bore of anfrom turning by reason 'of one of its ends other member. a 1 entering or being disposed in the tangential Afurther object is to provide the plug of: hole 7 in the cylinder and said securing a cylinder lock with a hardened cap and to 'wire, while preventing longitudinal displacesecure said cap' and plug against longitudiment of the plug, will permitv free rotary 10 nal displacement or withdrawal from the movement of said plug during the normal cylinder. 7 operation of. the lock.

. With these and other objects in view, the While I have described my improvements invention consists in certain novel features in connection with a cylinder lock, it will of constructon and combinationsof parts as be understood that the fastening means may 15 hereinafter set forth and pointed out in the a be applied in any construction embodying "la-ims. 4 a cylinder which receives in its bore a rotat- In the accompanyingodrawings able member.

Figure 1 is a sectional View of a cylinder Having fully'described my invention what look showing an embodiment of my i am I claim as new and desire to secure by Let- 29 tion. ters-Patent, is:

Figure 2 is a transverse sectional view 1. The combination of. a cylinder and a with the securing wire omitted. rotary member therein, said cylinder and Figure 3 is a transverse sectional view -membe'r having parts formed with mating showmg the securing wire in place. grooves and said cylinder having a tangen- 2 Figure 4 is a' view in elevation showing tial hole, and a fixed, continuous securing the plug and its cap, and member occupying said mating grooves and Figure 5 is a longitudinal sectional view extending into said tangential hole.

of the construction shown in Figure 4. 2. The combination of a cylinder of a cyl-' so The cylinder'or casing of a cylinder lock inder lock, said cylinder having an annular 30 is represented at'land the plug of the lock groove in its inner wall near one end and is shown at 2. The lock.plug is provided also having a tangential hole communicatat "its headed end with a hardened steel cap ing with said groove, a plug member in said 7 3 which may be secured thereto by forcing cylinder, an armor cap on oneend of said it on sa'idheaded end of the plug or in any, plug member and having an annular groove 35 other suitable manner. .The peripheral. mating with the annular roove'in the cylflange 4 of the cap '3 is provided with an inder, and a locking mem er occupying the annular groove- 5 and the inner wall of the* mating annular grooves in the cylinder and cylinder is provided near .its outer end cap and having one end disposed in the tanwith a groovefi to mate with the groove 5. gential hole in the cylinder.

. A hole "7 is made in the wall of the cylinder 3.. A plug and cylinder assembly inc lud- -1 and is tangential to the mating grooves 5 ing a cylinder having .a groove inthe plug and 6. A locking wire 8 is passed through bore and also having a tangential hole leadthe tangentialhole 7 and made to enter the ing into said groove. the plugv having a mating grooves :5 and 6 in the plug cap and groove mating with the cylinder groove, and

cylinder wall respectively. The' outer end a securing member lying partially in said of the locking wire will be forced inwardly tangential holevand partially in the mating past the outer face of the cylinder 1 and a grooves, the tangential portion acting to prea plug 9 may be inserted in the hole behind vent movement of said securing member. the end of the wire or said plug maybe In testimony whereof, I have signed this 50 omitted. i specification.

With my improved construction, the plug willbe provided with a hardened steel or A MAXWELL O. MAXWELL.

CERTIFICATE OF CORRECTION.

Patent No. 1,637,953. Granted August 2, 1927, to

MAXWELL c. I MAXWELL.

It is hereby certified that error appears in the-printed specification of the above numbered'patent requiring correction as follows: Page 1,- line 85,

claim 2, strike out the words 'an armor: and insert the article "a' and that the said Letters Patent should be read with this correction therein .that the same may conform to the record of the case in the Patent Office.

Signed and sealed this l3th'day of September, A. D. 1927.

M. J. Moore,

Seal. Acting Commiaioner of Patents. 

